Answer: backbay

AnswerCrossword Clue
BACKBAYUpscale section of Boston (or two words that can follow GREEN)
BACKBAYArea near Beacon Hill.
BACKBAYPart of Boston
BACKBAYTony section of Boston
BACKBAYHistoric Boston neighborhood
BACKBAYPosh part of Boston
BACKBAYBoston area known for its brownstones